Comparison of NVIDIA GeForce RTX 3090 Ti Founders Edition video card vs Gainward GeForce RTX 4090 Phantom GS video card by specifications and benchmarks. NVIDIA GeForce RTX 3090 Ti Founders Edition runs at 1.670 GHz base clock speed and has 24 GB of GDDR6X memory, while video card Gainward GeForce RTX 4090 Phantom GS runs at 2.235 GHz base clock speed and has 24 GB of GDDR6X memory. The TDP of the first video card is 450 W, and the second is 450 W. Compare the table of benchmark results to find out which graphic card is better.